The TI-BOOST is a simple pedal - it has a drive and a volume control, along with the ability to dial in the low and hi frequencies as well as a mid-switch that gives you a couple of different mid frequency options. The pedal functions in the same way as Tonys legendary modified Range Master - with a significant bass cut and mid boost, but with a little more gain and EQ options to appeal to more players looking to find their own sounds. True hardwire bypass. Powered by 9 volt battery or AC adaptor.